I will start with a disclaimer: symptoms of withdrawals can be very dangerous and professional help is often required and always advised. Yes, every time you seek info about addiction you receive a sales pitch from a recovery center so let us cut to the chase: please help yourself with the help of Nationwide recovery Centers or anyone you feel comfortable with.
So, now let’s get to it. Length of use and amount aside there are huge differences between addictions but also between drugs considered of the same “family”. Legal drug addiction is a perfect example, since some of the drugs were designed by the patent holder to affect the blood/brain barrier differently. So here are a few of the main timelines, they are just a guide obviously and should be taken with a grain of salt; the last slide compiles all of them together.
Hope it helps.